Global Patent Index - EP 1846787 A1

EP 1846787 A1 2007-10-24 - ATHERMAL FIBER BRAGG GRATING

Title (en)

ATHERMAL FIBER BRAGG GRATING

Title (de)

ATHERMISCHES FASER-BRAGG-GITTER

Title (fr)

RESEAU DE BRAGG SUR FIBRE ATHERMIQUE

Publication

EP 1846787 A1 (EN)

Application

EP 06720607 A

Priority

  • US 2006004738 W
  • US 90628905 A

Abstract (en)

[origin: US2005259920A1] An a thermal fiber Bragg grating assembly. A platform provides two attachment locations and has a first coefficient of thermal expansion. A stick provides two ends and has a second coefficient of thermal expansion. A fiber Bragg grating provides two ends and has effective third coefficient of thermal expansion. One stick end is fixed to one grating end, the other stick end is fixed to one attachment location, and the other grating end is fixed to the other attachment location. The stick has a same cross-section area along its length that is equal to or less than the cross-section area of the grating. And the coefficients and lengths between respective locations and ends are such that the assembly exhibits an effective overall coefficient of thermal expansion approaching zero.

IPC 8 full level (invention and additional information)

G02B 6/34 (2006.01); G02B 6/02 (2006.01); G02F 1/295 (2006.01)

CPC (invention and additional information)

G02F 1/0115 (2013.01); G02B 6/0218 (2013.01); G02F 2201/307 (2013.01); G02F 2203/60 (2013.01)

Citation (search report)

See references of WO 2006086635A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

EPO simple patent family

US 2005259920 A1 20051124; US 7116846 B2 20061003; EP 1846787 A1 20071024; KR 20070114739 A 20071204; WO 2006086635 A1 20060817

INPADOC legal status


2008-08-06 [18W] APPLICATION WITHDRAWN

- Effective date: 20080616

2008-05-21 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) (DELETED)

2007-10-24 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20070816

2007-10-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR